Stanley w



S. W. HMRlS.

VULCANIZER.

APPLICATION F|LEDMAR.1S,1919,

133619608. Patented Juje 10, 1919.

STANLEY W. H ARI-U5 W1 TNESSES 'UNITED STATES PATENT onirica.

STANLEY W. HARRIS, 0F AKRON, OHIO, ASSIGNO T0 THE KRON RUBBER MOLD it MACHINE COMPANY, 0F AKRON, OHIO, A CORPORATION OF OHIO.

l VLCANTZER.

Specification of Letters Patent.

vPatented J une i0,

Application' filed March 18, 1919. Serial No. 283.395.

treading and repairing tire c: sings and other vuleanizablc products.

An object of the present invention is the production of a repair vulca-nizer in which novel means is provided for gradually reducing, and merging the intensity of the vulcanizing heat at the ends of the vulcanizer housing, thereby preventing the formation production of a of ridges and other scar marks now caused by the extreme differences in the temperatures to which that portion of the tire within thc housing and the remaining portion of the tire exposed to the atmosphere are respectively subjected, at points approximating what are usually termed the 'end walls of the vulcanizer. y

Another object of this invention is to produce a repair vulcanizer having means detachably secured to the end walls of the vulcanizer for protecting an operator against possible injury from burning, which ifrequently occurs when inserting and removing the tire from the present type of repair vulcanizer.

Another object of this invention is the repair vulcanizer having auxiliary end Awalls composed of material having the nonheat-eonducting qualities of asbestos, wood and the lilge.

A further object of the present invention is the production of au auxiliary end Wall for a repair vulcanizer consisting of a chambered interior formed by positioning alternate layers of nommait-conducting material,

With these and other objects in view the invention further consists 1n the articular constructionand arrangement of t e several elements hereinafter described and pointed out in theappended claims.

repair vuleanizers, whereiny the tire after being repaired is scarred with y ridges and other markings at points imme diately adjacent the end walls of the. vul canizer housing. These ridges and scars are due to the swelling of the rubber because ot' the intense heat within the vuleanizer lionsing and the relativel cool atmospheric tcmperature innnediate y outside o the end walls of said housing. It has been found that the interposing of means for gradually reducing this intense heat and merging same with the atmospheric temperature at points where the tire casing leaves the housing of the vulcanizer will prevent the formation ot these marks and leave the tire free from all distigurements after the vulcanizing process.

Certain attempts have heretofore been made to prevent this disgurement in vuleanizinr by the use of single wooden blocks, have been attended with practical disadvan tages ct' non-durability and consequent cx pense. A

'Referring to the drawings in which corresponding reference characters designate similar parts` the vuleanizer 1 may be 0f the but theyordinary multi-cavity type provided with l.

the usual body portion or housing 2 in which the heating medium circulates. A burner 3, or other means of generating the vulcanizing heat is also provided.

The construction of the vuleanizer may be of any well known type` and a further description thereof will not be given.

The usual end walls t are shown as formed integral with the housing 2, and are of 'a notched or cut-away shape as shown, de`- pending upon the number of tire receiving cavities.

The auxiliary end wall 5 is'adaptcd te be secured to each end wall 4 of the housing 2, and comprises composite layers of asbestos and Wood respeoitiveiy. The asbestos sheet.- 6 is preferably applied immedaeely. adjacent the end .Walls 4; land serves o errestjtiie.

greater'-.intensity of the heat. The lef/ei of wood? 1s aiixeoi against. the-shee; of esbesos 6, and in :id 'ditiolfl v to .potee'ting the said sheet of asbestos, acts to further reduce the 'intensityof the'heat. Suitable soirews wie shown as :i means of detaehebliy seeming the seid layers'in position ageii'istthe'end Weils 4. These screws are preelaoiy oounteisunkv in the layer of Wood and screw' iin'o the end walls 4, es shown. By this eonstiuction ';he.

metal hesdso'' the screws are suiiieiei'rtly inipiessed into the auxiliary end Wells to prevent, v*their burning 'the hands of ihe operaior.

In the forniof auxiliary end` Weil iihis no'nfheatwconiiucting materiel 4 sie arranged iso-provide :L Chamber-ed ineiio'r construction or' thecireuletion es Well' es the ei'esting I' of the intense vuicaniziiig heee. This chem-`- bered interior 9 is formed oy liiieposi'im;

strips of asbesbos l0 betweenV the layers oli.'4

Wood 11., These strips maybe oi eifious lengths sind con'fornizo ehe on'ouiozf Vhe lend Wall of' the inuitif-ci'v '3 `villeanimen. Likewise', any number of'these niizernoiefln-j ers 'of non-heeecon'dueting materiel may be,

inserted, whereby *en evenv redueiion en'f'i graduali menging off fthe .intense'- vuiemiieing 'heet is accomplished. i It "m11 also be understood ehe-; any mini vbei' of 'sheeted' layers suiabiy izui'iinai'ed esA shown -m F1921, may be used for monding "Froin the foregoing it will eppmene" that an auxiliary endmil has been pio ducedI in: which the thickness thereof may. be Variedffoi' effeetnely aocomphshii f the objects hereinbeoi'e set forth. While Y shown and described the use ef asbestos auf?. Wood," I doinot limit myself the saine, as other materials of non-heea-oondueting queii-- ties''nay be'use..

l, Ina, repen-1 vuioenizei' the combination' with echembered Csviiy-poiion walls and auxiliary end-well@ J bhehiysecured to the aforesaid end maiis; snioi mini?,- fiary end Walls being foimeci of oomposifoe layers of asbestos end Wood I 2,' In :i repair vuieziniz'ei the'eombmsiion wells and auxiliary en Wels cieeehehiy cured to `the aforesaid en@ Weils, seio euf'ii- 'lary end .Wells Heilig oirmexi o?? imA 4with :i chambewviilis anoiau;

'iiiziiy end Walls being?v 'formed o'i siipei'iin cr-ated in Fig. 37 thesuperimposed layers of n 1 1 sim she-eins i nei/ing e I 3. lne repiiiifvuieenizei the combination i cavity poiion hevinfg end iiify end wi-iis deiy iiy` secliifed to the simi-maid end Wells, sai-iii amy Variable noi1-heiitiary end` Wells being oi'sned of .posed layers 'o noii-heehconduo iis-i, ine s 'for de'aoneoy viiieiinizeis come in eu -e f3, A hmi;

:ting me# iemine'ted'sheeis C i0; A. buil@ mi? v'liioenizo.

shee A ii @les il. A.'buiit op r pair viiieeniseis ooi nete@ sheets havin? e sorties oi'iio'ohes f* esees s 

